97984879 has 2 divisors, whose sum is σ = 97984880. Its totient is φ = 97984878.

The previous prime is 97984877. The next prime is 97984921. The reversal of 97984879 is 97848979.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97984879 - 2¹ = 97984877 is a prime.

Together with 97984877, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97984871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48992439 + 48992440.

It is an arithmetic number, because the mean of its divisors is an integer number (48992440).

Almost surely, 2^97984879 is an apocalyptic number.

97984879 is a deficient number, since it is larger than the sum of its proper divisors (1).

97984879 is an equidigital number, since it uses as much as digits as its factorization.

97984879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9144576, while the sum is 61.

The square root of 97984879 is about 9898.7311813181. The cubic root of 97984879 is about 461.0199156028.

It can be divided in two parts, 979 and 84879, that added together give a palindrome (85858).

The spelling of 97984879 in words is "ninety-seven million, nine hundred eighty-four thousand, eight hundred seventy-nine".